Ceadel, Martin. "The Richard Cobden Era: Pacificist Permeation, October 1848–September 1851." The Origins of War Prevention: The British Peace Movement and International Relations 1730-1854. : Oxford University Press, 1996-03-28. Oxford Scholarship Online. 2011-10-03. Date Accessed 19 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198226741.001.0001/acprof-9780198226741-chapter-10>.
Ceadel, M.(1996-03-28). The Richard Cobden Era: Pacificist Permeation, October 1848–September 1851. In The Origins of War Prevention: The British Peace Movement and International Relations 1730-1854. : Oxford University Press. Retrieved 19 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198226741.001.0001/acprof-9780198226741-chapter-10.
Ceadel, Martin. "The Richard Cobden Era: Pacificist Permeation, October 1848–September 1851." In The Origins of War Prevention: The British Peace Movement and International Relations 1730-1854. : Oxford University Press, 1996-03-28. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198226741.001.0001/acprof-9780198226741-chapter-10.
Ceadel M. The Richard Cobden Era: Pacificist Permeation, October 1848–September 1851. In: Ceadel M. The Origins of War Prevention: The British Peace Movement and International Relations 1730-1854. Oxford University Press; 1996. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198226741.001.0001/acprof-9780198226741-chapter-10. Accessed May 19, 2013.